<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id='app'>
    <h1 v-on:click="clickHandler">差值表达式</h1>
    <h3>{{ msg }}</h3>
    <h3>{{ count }}</h3>
    <h1>v-text</h1>
    <div v-text="msg"></div>
    <h1>v-model</h1>
    <input type="text" v-model="msg">
    <input type="text" v-model="count">
  </div>
</body>
<script src='./js/dep.js'></script>
<script src="./js/watcher.js"></script>
<script src="./js/compiler.js"></script>
<script src="./js/abserver.js"></script>
<script src="./js/vue.js"></script>
<!-- <script src="https://cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.js"></script> -->
<script>
  let vm = new Vue({
    el: '#app',
    data: {
      msg: 'Hello Vue',
      count: 100,
    },
    methods: {
      clickHandler() {
        // 该 name 属性是否是响应式的
        console.log('clickHandler==',this)
        this.count=200
      }
    },
  }, )
</script>

</html>